The health effects of mercury poisoning include central nervous system damage, hearing loss and vision problems.
汞中毒对健康的影响包括中枢神经系统损害、听力损失和视力问题。
If the subject identifies the sounds as a tune or specific pattern, the central hearing in the brain is normal and the cause of the hearing loss must be located in the inner ear.
如果测试对象听到的是旋律或特殊样本，则在大脑中的听觉中枢是正常的，听力损失的原因肯定位于内耳。
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